Greenehaven Water Company, AZ
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Greenehaven Water Company at a glance
Greenehaven Water Company serves about 883 people through 375 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Coconino County, Arizona. EPA system ID: AZ0403037; phone on file: 520-623-5172. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Greenehaven Water Company is 34 ppb across 13 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2024 | 34 ppb over 15 |
| 2023 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 34 ppb over 15 |
| 2021 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 3.7 ppb |
| 2016 | 3.7 ppb |
How Greenehaven Water Company compares
Of the 730 Arizona systems with a lead result, the median latest reading is 0 ppb; 9 are over 15 ppb right now and 58 have gone over at some point. Greenehaven Water Company's reported as 0 (not detected) sits at the 42nd percentile in Arizona and the 26th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
32 other systems share Coconino County; 8 of them have a higher latest lead result than Greenehaven Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Flagstaff City Of | 79,796 | 3.6 ppb |
| Grand Canyon National Park | 16,590 | 0 (not detected) |
| Arizona Water Co - Sedona | 12,104 | 6 ppb |
| Doney Park Water | 9,222 | 0 (not detected) |
| Arizona Water Co - Pinewood | 8,115 | 0 (not detected) |
| Page City Of | 7,445 | 0 (not detected) |
| Kachina Village Dwid | 3,500 | 0 (not detected) |
| Williams City Of | 3,145 | 8.6 ppb |
| Blue Ridge Dwid | 1,920 | 0 (not detected) |
| Forest Lakes Water Improvement District | 1,746 | 5.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Tucson, AZ may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Greenehaven Water Company whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. What a 90th-percentile result does and does not tell you: how to read a lead result. More in what a past exceedance means today.